Spire every time. My rotor packed up on me several times, whereas the only time my spire stopped working was when I had a break that caused chopping all the way into the bottom of the hopper. Even then it was trying to push the mush through

Brilliant design, ease of field stripping/cleaning, rhobust construction, ability to take 50cal with a kit, jam clearance, sheer speed and battery life. Had mine ages and I don’t remember ever changing the batteries